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<table width="100%" summary="page for CalciumBP"><tr><td>CalciumBP</td><td style="text-align: right;">R Documentation</td></tr></table>

<h2>Do Calcium Supplements Lower Blood Pressure?</h2>

<h3>Description</h3>

<p>An experiment on calcium supplements and blood pressure in 21 men
</p>


<h3>Format</h3>

<p>A data frame with 21 observations on the following 2 variables.
</p>

<table summary="Rd table">
<tr>
 <td style="text-align: right;">
    <code>Treatment</code> </td><td style="text-align: left;"> <code>Calcium</code> or <code>Placebo</code></td>
</tr>
<tr>
 <td style="text-align: right;">
    <code>Decrease</code> </td><td style="text-align: left;"> Beginning-ending blood pressure</td>
</tr>
<tr>
 <td style="text-align: right;">
  </td>
</tr>

</table>



<h3>Details</h3>

<p>The purpose of this study was to see whether daily calcium supplements can lower blood pressure.
The subjects were 21 men; each was randomly assigned either to a treatment group or to a control
group. Those in the treatment group took a daily pill containing calcium. Those in the control
group took a daily pill with no active ingredients. Each subject's blood pressure was measured at
the beginning of the 12-week study, and again at the end.  The decrease in blood pressure (begin-end)
was recorded (so a negative value means blood pressure increased).
</p>


<h3>Source</h3>

<p>Dataset downloaded from online data source Data and Story Library, <br />
http://lib.stat.cmu.edu/DASL/Stories/CalciumandBloodPressure.html
</p>


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